Yo.
1: Yes, i think it should be easier to feel the lucid dream after you already got it done some times, thus easier to do it again, though probably not by much, it really depends on one's mindset.
2: Yes, yes and yes, though not overdo it, 'cause you might get too excited .
3: Dunno about other methods but they are very helpful for relaxation for WILD'ing .
4: See 3.
5: Depends on one's expectations, if you really will think about them much, they will appear, if you don't like them, don't think about them and just enjoy experience .
6: Don't works for me at all personally, but from what i know it's very effective for the most of people.
7: Dunno, i don't have any sort of that hardware.